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ICOM
Water treatment and conditioning of commercial
heating systems guide.
Where reference is made throughout these instructions I.S.813:2002
"Domestic Gas Installations" reference should also be made to
I.S.820:2000 "Non-Domestic Gas Installations" as applicable.
1.4 SAFE HANDLING
This boiler will require 2 or more operatives to move it to its
installation site, remove it from its packaging base and during
movement into its installation location. Manoeuvring the boiler
may include the use of a sack truck and involve lifting, pushing
and pulling.
Caution should be exercised during these operations.
Operatives should be knowledgeable in handling techniques when
performing these tasks and the following precautions should be
considered:
•
Grip the boiler at the base.
•
Be physically capable.
•
Use personal protective equipment as appropriate, e.g.
gloves, safety footwear.
During all manoeuvres and handling actions, every attempt
should be made to ensure the following unless unavoidable and/
or the weight is light.
• Keep back straight.
• Avoid twisting at the waist.
• Avoid upper body/top heavy bending.
• Always grip with the palm of the hand.
• Use designated hand holds.
• Keep load as close to the body as possible.
• Always use assistance if required.
1.5 SAFE HANDLING OF SUBSTANCES
No asbestos, mercury or CFCs are included in any part of the
boiler or its manufacture.
1.6 LOCATION OF BOILER
The boiler must be installed on a flat and vertical wall capable of
adequately supporting the weight of the boiler and any ancillary
equipment or on a boiler frame supplied in kit form.
The wall must be 90º (±5º) from the perpendicular. This is to allow
safe operation of the integral flue non-return valve.
The boiler must not be fitted outside.
1.7 GAS SUPPLY
IMPORTANT
Ensure all gas valve connections are gas tight with a gas
soundness check up to the gas multi-functional control
valve.
The local gas supplier should be consulted, at the installation
planning stage, in order to establish the availability of an adequate
supply of gas. An existing service pipe must NOT be used without
prior consultation with the local gas supplier.
A gas meter can only be connected by the local gas supplier or
by a suitably qualified Gas Safe registered engineer or in IE by a
competent person.
An existing meter should be checked, preferably by the gas
supplier, to ensure that the meter is adequate to deal with the
rate of gas supply required. A minimum working gas pressure of
17.5mbar MUST be available at the boiler inlet for Natural gas
and 32mbar for Propane.
Do not use pipes of smaller size than the boiler inlet gas connection.
The complete installation MUST be tested for gas soundness and
purged in accordance with the appropriate standards listed on page 8.
Installation & Servicing
SECTION 1 - GENERAL
1.8 FLUE INSTALLATION
Individual air supply and flue outlet pipes are used. The material
used for the flue outlet and the air intake systems, must be
muPVC (PVC-C) to BS 5255. In addition the flue outlet and air
intake pipework must be marked BSEN 1566-1 and the fittings
must be marked BSEN 1329. Marley muPVC Solvent Weld
System (50mm), Polypipe System 2000 muPVC Solvent Weld
System (50mm), Wavin Osma Solvent Weld System and Polypipe
Terrain 200 muPVC Solvent Weld System are recommended.
DO NOT USE ABS PIPE OR FITTINGS.
IMPORTANT
It is the responsibility of the installer to ensure, in practice, that
products of combustion discharging from the terminal cannot
re-enter the building or any other adjacent building through
ventilators, windows, doors, other sources of natural air infiltration,
or forced ventilation / air conditioning.
If this should occur the appliance MUST be turned OFF, labelled
as 'unsafe' and corrective action taken.
Where the lowest part of the terminal is fitted less than 2m above
a balcony, above ground or above a flat roof to which people
have access then the terminal MUST be protected by a purpose
designed guard. The minimum spacing between the balcony and
the terminal should be 75mm, in order to allow a terminal guard to
be fitted.
Terminal guards are available from boiler suppliers
Ensure that the guard is fitted centrally.
The air inlet/products outlet duct and the terminal of the boiler
MUST NOT be closer than 25mm to combustible material.
Detailed recommendations on the protection of combustible
material are given in BS. 5440-1. In IE refer to I.S.813.
The flue must be installed in accordance with Building
Regulations and the recommendations of BS. 5440-1 for inputs
up to 70kW nett.
1.9 WATER CIRCULATION SYSTEM
The boiler must NOT be used for direct hot water supply. The hot
water storage cylinder MUST be of the indirect type.
Single feed, indirect cylinders are not recommended and MUST
NOT be used on sealed systems.
The appliances are NOT suitable for gravity central heating nor
are they suitable for the provision of gravity domestic hot water.
The hot water cylinder and ancillary pipework, not forming part of
the useful heating surface, should be lagged to prevent heat loss
and any possible freezing - particularly where pipes run through
roof spaces and ventilated underfloor spaces.
The boiler must be vented.
Draining taps MUST be located in accessible positions, which
permit the draining of the whole system - including the boiler
and hot water storage vessel. They should be at least 1/2" BSP
nominal size and be in accordance with BS. 2879.
The central heating system should be in accordance with the
relevant standards listed on page 8.
The Keston boilers feature an integral circulating pump which
has sufficient excess head to drive most domestic systems. The
available head is indicated in the chart below. If the system
resistance, at the desired flow rate, is in excess of the available
head from the integral pump an additional system pump will be
required.
9
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